package util.fileUtil;

import android.content.Context;

import org.apache.http.protocol.HTTP;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;

import app.MyApplication;
import data.SharedPreferencesUtils;
import util.HomeUtil;
import util.LogUtil;

public class ZipUtils {
    private static final int BUFF_SIZE = 1024 * 1024; // 1M Byte
    private static ZipUtils mZipUtils;

    public synchronized static ZipUtils getmZipUtils(){
        if(mZipUtils == null){
            mZipUtils = new ZipUtils();
            return mZipUtils;
        }
        return mZipUtils;
    }

    /**
     * 批量压缩文件（夹）
     *
     * @param resFileList 要压缩的文件（夹）列表
     * @param zipFile     生成的压缩文件
     * @param comment     压缩文件的注释
     * @throws IOException 当压缩过程出错时抛出
     */
    public void zipFiles(Collection<File> resFileList, File zipFile, String comment) throws IOException {
        ZipOutputStream zipout = null;
        try {
            zipout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile), BUFF_SIZE));
            for (File resFile : resFileList) {
                zipFile(resFile, zipout, "");
            }
            zipout.setComment(comment);

        } finally {
            if (zipout != null)
                zipout.close();
        }
    }

    /**
     * 解压缩一个文件
     * @param zipFile       压缩文件
     * @param folderPath    压缩的目标目录
     * @throws IOException  当解压缩过程出错时抛出
     */
    public void upZipFile(File zipFile, String folderPath) throws IOException {
        File desDir = new File(folderPath);
        if (!desDir.exists()) {
            desDir.mkdirs();
        }
        ZipFile zf = new ZipFile(zipFile);
        InputStream in = null;
        OutputStream out = null;
        try {
            for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements(); ) {
                ZipEntry entry = ((ZipEntry) entries.nextElement());
                in = zf.getInputStream(entry);
                String str = folderPath + File.separator + entry.getName();
                str = new String(str.getBytes("8859_1"), HTTP.UTF_8);
                File desFile = new File(str);
                if (!desFile.exists()) {
                    File fileParentDir = desFile.getParentFile();
                    if (!fileParentDir.exists()) {
                        fileParentDir.mkdirs();
                    }
                    desFile.createNewFile();
                }
                out = new FileOutputStream(desFile);
                byte buffer[] = new byte[BUFF_SIZE];
                int realLength;
                while ((realLength = in.read(buffer)) > 0) {
                    out.write(buffer, 0, realLength);
                }

            }
        } finally {
            if (in != null)
                in.close();
            if (out != null)
                out.close();
        }
    }

    /**
     * 解压文件名包含传入文字的文件
     * @param zipFile       压缩文件
     * @param folderPath    目标文件夹
     * @param nameContains  传入的文件匹配名
     * @throws ZipException 压缩格式有误时抛出
     * @throws IOException  IO错误时抛出
     */
    public ArrayList<File> upZipSelectedFile(File zipFile, String folderPath, String nameContains) throws
            IOException {
        ArrayList<File> fileList = new ArrayList<File>();
        File desDir = new File(folderPath);
        if (!desDir.exists()) {
            desDir.mkdir();
        }
        ZipFile zf = new ZipFile(zipFile);
        InputStream in = null;
        OutputStream out = null;
        try {
            for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements(); ) {
                ZipEntry entry = ((ZipEntry) entries.nextElement());
                if (entry.getName().contains(nameContains)) {
                    in = zf.getInputStream(entry);
                    String str = folderPath + File.separator + entry.getName();
                    str = new String(str.getBytes("8859_1"), HTTP.UTF_8);
                    // str.getBytes(AppConstans.UTF_8),"8859_1" 输出
                    // str.getBytes("8859_1"),AppConstans.UTF_8 输入
                    File desFile = new File(str);
                    if (!desFile.exists()) {
                        File fileParentDir = desFile.getParentFile();
                        if (!fileParentDir.exists()) {
                            fileParentDir.mkdirs();
                        }
                        desFile.createNewFile();
                    }
                    out = new FileOutputStream(desFile);
                    byte buffer[] = new byte[BUFF_SIZE];
                    int realLength;
                    while ((realLength = in.read(buffer)) > 0) {
                        out.write(buffer, 0, realLength);
                    }

                    fileList.add(desFile);
                }
            }
        } finally {
            if (in != null)
                in.close();
            if (out != null)
                out.close();
        }
        return fileList;
    }

    /**
     * 获得压缩文件内文件列表
     *
     * @param zipFile 压缩文件
     * @return 压缩文件内文件名称
     * @throws ZipException 压缩文件格式有误时抛出
     * @throws IOException  当解压缩过程出错时抛出
     */
    public ArrayList<String> getEntriesNames(File zipFile) throws IOException {
        ArrayList<String> entryNames = new ArrayList<String>();
        Enumeration<?> entries = getEntriesEnumeration(zipFile);
        while (entries.hasMoreElements()) {
            ZipEntry entry = ((ZipEntry) entries.nextElement());
            entryNames.add(new String(getEntryName(entry).getBytes(HTTP.UTF_8), "8859_1"));
        }
        return entryNames;
    }

    /**
     * 获得压缩文件内压缩文件对象以取得其属性
     *
     * @param zipFile 压缩文件
     * @return 返回一个压缩文件列表
     * @throws ZipException 压缩文件格式有误时抛出
     * @throws IOException  IO操作有误时抛出
     */
    public Enumeration<?> getEntriesEnumeration(File zipFile) throws IOException {
        ZipFile zf = new ZipFile(zipFile);
        return zf.entries();

    }

    /**
     * 取得压缩文件对象的注释
     *
     * @param entry 压缩文件对象
     * @return 压缩文件对象的注释
     * @throws UnsupportedEncodingException
     */
    public String getEntryComment(ZipEntry entry) throws UnsupportedEncodingException {
        return new String(entry.getComment().getBytes(HTTP.UTF_8), "8859_1");
    }

    /**
     * 取得压缩文件对象的名称
     *
     * @param entry 压缩文件对象
     * @return 压缩文件对象的名称
     * @throws UnsupportedEncodingException
     */
    public String getEntryName(ZipEntry entry) throws UnsupportedEncodingException {
        return new String(entry.getName().getBytes(HTTP.UTF_8), "8859_1");
    }

    /**
     * 压缩文件
     *
     * @param resFile  需要压缩的文件（夹）
     * @param zipout   压缩的目的文件
     * @param rootpath 压缩的文件路径
     * @throws FileNotFoundException 找不到文件时抛出
     * @throws IOException           当压缩过程出错时抛出
     */
    private void zipFile(File resFile, ZipOutputStream zipout, String rootpath) throws IOException {
        rootpath = rootpath + (rootpath.trim().length() == 0 ? "" : File.separator) + resFile.getName();
        rootpath = new String(rootpath.getBytes("8859_1"), HTTP.UTF_8);
        BufferedInputStream in = null;
        try {
            if (resFile.isDirectory()) {
                File[] fileList = resFile.listFiles();
                for (File file : fileList) {
                    zipFile(file, zipout, rootpath);
                }
            } else {
                byte buffer[] = new byte[BUFF_SIZE];
                in = new BufferedInputStream(new FileInputStream(resFile), BUFF_SIZE);
                zipout.putNextEntry(new ZipEntry(rootpath));
                int realLength;
                while ((realLength = in.read(buffer)) != -1) {
                    zipout.write(buffer, 0, realLength);
                }
                in.close();
                zipout.flush();
                zipout.closeEntry();
            }
        } finally {
            if (in != null)
                in.close();
            // if (zipout != null);
            // zipout.close();
        }
    }

    /**
     * 递归删除文件夹
     */
    public void deleteFile(File file) {
        if (file.exists()) {//判断文件是否存在
            if (file.isFile()) {//判断是否是文件
                file.delete();//删除文件
                LogUtil.eE("FILE","删除文件");
            } else if (file.isDirectory()) {//否则如果它是一个目录
                File[] files = file.listFiles();//声明目录下所有的文件 files[];
                for (int i = 0;i < files.length;i ++) {//遍历目录下所有的文件
                    this.deleteFile(files[i]);//把每个文件用这个方法进行迭代
                }
                LogUtil.eE("FILE","删除文件夹");
                file.delete();//删除文件夹
            }

            if(!file.exists()){
                LogUtil.eE("FILE","删除成功");
            }
        } else {
            LogUtil.eE("FILE","文件不存在");
        }
    }
}